Burglar-alarm.



iGFFICE.

HARRY BASEVITZ, F CHICAGO, ILLINOIS.

BURGLAR-ALARM.

Specification of Letters Patent. lPatented Feb. 29, 1916.

Application sied :ruiy 2, 1915. serial n. 37,679.

'To aZZ whom it may concern Be itvkiiown that I, HARRY BAsEviTz, acitizen of the nited States, and a resident of Chicago, in the county ofCook and State 'of Illinois, have invented a new and ImprovedBurglar-Alarm, of which the tollowing is a full, clear, and exactdescrip- -I A tion.

- thorized 'person is trying to force a closurev Myinvention relates toburglar alarms, andthe object thereof is to provide a simple,inexpensive, and eflicient alarm which is adapted to fire a cartridgewhen an unauprotected byathe said alarm.

' lVitli the above fand other objects iii View, the nature oi-swhichwill more fully appear as the description proceeds, the inventionconsists in the novel Construction, combinar. tion and ariangeinent'ofparts as herein fully described, illustrated and claimed.

`In the accompanying drawings, forming part of the application, similarcharacters of reference indicate corresponding parts in 'all p theviews.

Figure 1 is an elevation of the lower portion of a door closure providedwith an ein- `bodimeiit of iny'invention; Fig. 2 is a side elevation ofthe alarm; Fig. 3 isa similar view from the opposite side; and Fig. t isan elevation from the inner side ot the alarm. y, Referring -to thedrawings, 5 represents the frame or casing which is formed of a. blank,the edges of which are raised to form vthe casing. One ofthe' sides oredges of the casing 5 has a socketl 6 adjacent one corner which forms acartridge holder. On the same side ad]acent the other corner, a poi'- ytion 'of the casing is folded over to form a U-portion 1' (see Fig. inwhich portion a transverse slot 8 is formed, as best seen in Fig. 4. Ahammer9 has one end thereof pivotally connected to the casing. The otherend is adapted to swing to and from the socket 6. The socket andU-portion being in alinenient, the swinging end of the `hammer passesthrough the U-portion 7 when moving toward the side of the casingi'emote from the socket The casing 5 is provided with suitable apertures1+i whereby Vthe same can'be secured to or 'at the closure to beprotected by the alarm. The latch l1 is provided with a flexible member15', such as a chain, which chain carries a securing member 16 wherebythe chain Imay be attached. As shown in Fig. 1, the chain is attached toa door 17 and the alarm is attached to the door jamb. llvlien the hammeris set in` the position shown in Figs. l and 4, the socket 6 can beengaged by a cartridge 18; and if an unau-v thorized entrance. iseffected, the latch 1l will be-,forced out of the slot 8 permitting thespringr 10 to swing the hammer against the cartridge`l thus firing thesame and giving the alarm` i lVhileI have described the principle ofoperation.. together with the device which I now consider to be the bestembodiment thereof, I desire to have it understood that the device shownis-meiely illustrative4 and that such changes may be made-as are withinthe scope of the appended claim.

I claim:

A burglar alarm of the class described comprising,-a casing, a socket onone side of 'the casing adjacent the corner thereof and forming acartridge holder, said casing having a Ushaped portion at the saine sideadjacent the other corner in alinenient with the socket,l a hammermounted to swing in the casing to and from the socket and adapted topass into the U-shaped portion, a spring -for moving the hammer towardthe socket, ca pin extending from the said hamnier through the casingwhereby the same can v be moved from the socket and whereby the springis placed under tension, a latch detachably associated with the U-shapedportion and adapted' to engage the hammer whereby the spring ismaintained under tension, and means associated with the latch wherebythe saine can be removed from the U-sliaped portion, thus permitting thespring to move the hammer toward the socket.

Iii testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HARRY BASEVITZ.

V 'itnesses:

FRANK J. Posvio, BERNARD IVILTON.

